I don't drink much soda any more. In fact, I judge the restaurants I go to by the quality of the iced tea that they serve.
That said, I do drink those modern "essenced" carbonated waters. I'm particularly fond of Arrowhead Lemon water. We buy it by the case.
All that said, my favorite cola, back in the day, was this stuff called "Red Cane Cola". It was served in the Seattle's Best coffee bars in the Border bookstores. Oh my was that stuff great. Just really an extraordinary cola drink. Syrup mixed with soda water at the bar, like the old days.
Doesn't exist anymore, unfortunately.